Swallowing activity assessed by ambulatory impedance-pH monitoring predicts awake and asleep periods at night.
Dig Dis Sci
; 58(4): 1049-53, 2013 Apr.
Article
em En
| MEDLINE
| ID: mdl-23179150
ABSTRACT
INTRODUCTION:
Voluntary muscle activity, including swallowing, decreases during the night. The association between nocturnal awakenings and swallowing activity is under-researched with limited information on the frequency of swallows during awake and asleep periods.AIM:
The aim of this study was to assess nocturnal swallowing activity and identify a cut-off predicting awake and asleep periods.METHODS:
Patients undergoing impedance-pH monitoring as part of GERD work-up were asked to wear a wrist activity detecting device (Actigraph(®)) at night. Swallowing activity was quantified by analysing impedance changes in the proximal esophagus. Awake and asleep periods were determined using a validated scoring system (Sadeh algorithm). Receiver operating characteristics (ROC) analyses were performed to determine sensitivity, specificity and accuracy of swallowing frequency to identify awake and asleep periods.RESULTS:
Data from 76 patients (28 male, 48 female; mean age 56 ± 15 years) were included in the analysis. The ROC analysis found that 0.33 sw/min (i.e. one swallow every 3 min) had the optimal sensitivity (78 %) and specificity (76 %) to differentiate awake from asleep periods. A swallowing frequency of 0.25 sw/min (i.e. one swallow every 4 min) was 93 % sensitive and 57 % specific to identify awake periods. A swallowing frequency of 1 sw/min was 20 % sensitive but 96 % specific in identifying awake periods. Impedance-pH monitoring detects differences in swallowing activity during awake and asleep periods. Swallowing frequency noticed during ambulatory impedance-pH monitoring can predict the state of consciousness during nocturnal periods.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sono
/
Transtornos do Sono-Vigília
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Refluxo Gastroesofágico
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Deglutição
/
Monitoramento do pH Esofágico
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Dig Dis Sci
Ano de publicação:
2013
Tipo de documento:
Article